Coreopsis plant named ‘MVNC1906’

ABSTRACT

A new cultivar of hybrid  Coreopsis  plant named ‘MVNC1906’ that is characterized by its neat and compact (50 cm in height) plant habit with stems that are similar in length, its long flowering period from late spring to early autumn in The Netherlands (commences early), its inflorescences with ray florets that are light yellow in color with dark red centers, its abundance of inflorescences that are large in size, its resistance to powdery mildew, its high tolerance to heat and humidity, and its healthy foliage that maintains its bright green appearance.

Botanical classification: Coreopsis grandiflora.

Variety denomination: ‘MVNC1906’.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to European Community Plant Variety Office (CPVO) Plant Breeder's Rights Application No. 2022/0409 filed on Feb/ 8, 2022, under 35 U.S.C. 119(f), the entire contents of which is incorporated by reference herein. This application is also co-pending with U.S. Plant Patent Applications filed for plants derived from the same breeding program that are entitled Coreopsis Plant Named ‘MVNC1902’ (U.S. Plant patent application Ser. No. 17/948,449), Coreopsis Plant Named ‘MVNC1823’ (U.S. Plant patent application Ser. No. 17/948,404), and Coreopsis Plant Named ‘MVNC1904’ (U.S. Plant patent application Ser. No. 17/948,459).

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Coreopsis plant, botanically of hybrid origin and known as Coreopsis grandiflora ‘MVNC1906’ and will be referred to hereinafter by its cultivar name, ‘MVNC1906’. The new cultivar of Coreopsis is an herbaceous perennial grown for landscape and container use.

The new cultivar arose from an ongoing breeding program conducted by the Inventor in Warmond, The Netherlands. The goal of the breeding program is to develop new cultivars of Coreopsis grandiflora that are early flowering and have dependable perennial habits, an abundance of flowers, healthy foliage with powdery mildew resistance combined with unique inflorescence coloration. ‘MVNC1906’ was selected by the Inventor as a seedling in a trial garden in Warmond, The Netherlands in July of 2017. The new cultivar arose from open pollination of unnamed (not patented) seedlings of Coreopsis grandiflora in the inventors breeding program. The seeds were pooled after collection and therefore the exact parents are unknown.

Asexual propagation of the new cultivar was first accomplished by stem cuttings in Lisse, The Netherlands in 2021 under the direction of the Inventor. Asexual propagation by stem cuttings has determined that the characteristics of the new cultivar are stable and are reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The following traits have been repeatedly observed and are determined to be the characteristics of the new cultivar. These attributes in combination distinguish ‘MVNC1906’ as a unique cultivar of Coreopsis.

-   -   1. ‘MVNC1906’ exhibits a neat and compact (50 cm in height)         plant habit with stems that are similar in length.     -   2. ‘MVNC1906’ exhibits a long flowering period from late spring         to early autumn in The Netherlands (commences early).     -   3. ‘MVNC1906’ exhibits inflorescences with ray florets that are         light yellow in color with dark red centers.     -   4. ‘MVNC1906’ exhibits an abundance of inflorescences that are         large in size.     -   5. ‘MVNC1906’ exhibits resistance to powdery mildew.     -   6. ‘MVNC1906’ exhibits a high tolerance to heat and humidity.     -   7. ‘MVNC1906’ exhibits healthy foliage that maintains its bright         green appearance.

‘MVNC1906’ can be most closely compared to Coreopsis grandiflora cultivar ‘Sonnenkind’ (not patented) and cultivars derived from the same crosses; ‘MVNC1902’, ‘MVNC1823’, and ‘MVNC1904’. ‘Sonnenkind’ differs from ‘MVNC1906’ in having a lower resistance to powdery mildew, foliage that is not as healthy, and in producing fewer inflorescences. ‘MVNC1902’ differs from ‘MVNC1906’ in having inflorescences with ray florets that are bright red in color with yellow-orange margins. ‘MVNC1823’ differs from ‘MVNC1906’ in having inflorescences with ray florets that are darker yellow in color with lighter red centers. ‘MVNC1904’ differs from ‘MVNC1906’ in having inflorescences with ray florets that are cherry red in color with yellow margins.

STATEMENT REGARDING PRIOR DISCLOSURES BY THE INVENTOR

The Applicant asserts that no publications or advertisements relating to sales, offers for sale, or public distribution occurred more than one year prior to the effective filing date of this application. Any information about the claimed plant would have been obtained from a direct or indirect disclosure from the Inventor. The Applicant claims a prior art exemption under 35 U.S.C. 102(b)(1) for disclosure and/or sales that fall within a one-year grace period prior to the filing date. Publications include listings on websites by Plantipp and Quality Cuttings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying color photographs illustrate the overall appearance and distinct characteristics of the new Coreopsis. The photographs were taken of a 1-year-old plant of ‘MVNC1906’ as grown outdoors in a 17 cm container in Warmond, The Netherlands.

The photograph in FIG. 1 provides a view of the plant habit of ‘MVNC1906’ in bloom.

The photograph in FIG. 2 provides a close-up view of the inflorescences of ‘MVNC1906’.

The colors in the photographs are as close as possible with the photographic and printing technology utilized and the color values cited in the detailed botanical description accurately describe the colors of the new Coreopsis.

DETAILED BOTANICAL DESCRIPTION

The following is a detailed description of 1-year-old plants of ‘MVNC1906’ as grown outdoors in 17 cm containers in Warmond, The Netherlands. The phenotype of the new cultivar may vary with variations in environmental, climatic, and cultural conditions, as it has not been tested under all possible environmental conditions. The color determination is in accordance with The 2015 Colour Chart of The Royal Horticultural Society, London, England, except where general color terms of ordinary dictionary significance are used.

-   General description:     -   -   Blooming period.—Blooms from late spring to early autumn in             The Netherlands.         -   Plant type.—Herbaceous perennial.         -   Plant habit.—Clump-forming, compact, bushy, upright leafy             flowering stems that are similar in length with             inflorescences held above the foliage.         -   Height and spread.—Reaches an average of 50 cm in height and             54.4 cm in width.         -   Cold hardiness.—At least to U.S.D.A Zone 4.         -   Diseases and pests.—Resistance to powdery mildew             (Podosphaera macularis), no susceptibility or resistance to             pests has been observed.         -   Root description.—Fibrous and fine, NN155A in color.         -   Propagation.—Root cuttings and stem cuttings.         -   Root development.—An average of 10 days for root initiation,             an average of 20 weeks to produce a marketable plant.         -   Growth rate.—Moderate to highly vigorous. -   Branch description:     -   -   Branch shape.—Rounded, strongly axially ribbed.         -   Branch color.—144A to 144B.         -   Branch size.—Main and secondary stems; an average of 15.5 cm             in length and 4 mm in width.         -   Branch strength.—Very strong.         -   Branch surface.—Glabrous.         -   Branch aspect.—Average of 30° to vertical.         -   Branching quantity.—An average of 28 main branches, 3             secondary branches per main stem.         -   Internode length.—An average of 8.2 cm. -   Foliage description:     -   -   Leaf division.—Simple, 50% of leaves trifoliate.         -   Leaf and leaflet margins.—Entire.         -   Leaf size.—7.9 cm in length, 1.6 cm in width, lateral             leaflets of trifoliate leaves; 3 cm in length, 5 mm in             width.         -   Leaf and leaflet shape.—Lanceolate, 50% of leaves             trifoliate.         -   Leaf and leaflet base.—Long attenuate.         -   Leaf and leaflet apex.—Bluntly acute to obtuse.         -   Leaf and leaflet venation.—Pinnate, both surfaces 144A.         -   Leaf attachment.—Petiolate.         -   Leaf arrangement.—Opposite.         -   Leaf surface.—Upper surface matte, smooth, slightly             leathery, lower surface slightly glossy, smooth, slightly             leathery, margins are sparsely pubescent with short thin             hairs; 0.5 mm in length, too small to measure color.         -   Leaf color.—Young upper surface 143A to 146B, young lower             surface 146B, mature upper surface 137B, mature lower             surface 147B.         -   Petioles.—Average of 1.7 cm in length, 2.5 mm in width,             v-shaped, both surfaces smooth and glabrous, both surfaces             144A in color, margins sparsely pubescent with short thin             hairs an average of 1 mm in length and too small to measure             color. -   Flower description:     -   -   Inflorescence type.—Terminal capitulum consisting of ray             florets and disc florets.         -   Lastingness of inflorescence.—Average of 10 days.         -   Fragrance.—Faint, pleasant.         -   Quantity of inflorescences.—1 per lateral stem, 110 per             plant.         -   Inflorescence size.—2.3 cm in height, 6.2 cm in diameter,             disc diameter 1.3 cm.         -   Inflorescence buds.—Broad obovate in shape, an average of 8             mm in depth and 9 mm in diameter, dull surface; color; 152A,             base 152B.         -   Peduncle.—Axially ribbed in shape, moderately strong, held             in a vertical angle, an average of 16.3 cm in length and 2             mm in diameter, 144A to 144B in color, smooth, slightly             glossy and glabrous surface. -   Phyllaries (involucral bracts):     -   -   Phyllary number.—2 rows; total of 16, upper row 8, lower row             8.         -   Phyllary size.—Upper phyllaries; an average of 1 cm in             length and 6 mm in width, lower phyllaries; an average of 8             mm in length and 2.5 mm in width.         -   Phyllary color.—Upper phyllaries upper surface; 152D,             margins 154B, upper phyllaries lower surface; 143B, upper             ⅔rd 152C, margins 154B, lower phyllaries upper surface;             144A, lower phyllaries lower surface; 143A.         -   Phyllary texture.—Both surfaces smooth, glabrous, moderately             glossy, margins sparsely to moderately covered with             pubescent hairs, average of 0.2 mm in length and too small             to measure color.         -   Phyllary apex.—Acute.         -   Phyllary base.—Cuneate.         -   Phyllary shape.—Upper phyllaries; ovate, lower phyllaries;             cuneate. -   Ray florets:     -   -   Number.—9, (varying between 8 and 10).         -   Shape.—Obovate to near oblong.         -   Size.—An average of 3.2 cm in length and 1.7 cm in width.         -   Apex.—Cleft into 3 lobes, tip of central lobe emarginate to             cleft, tips of lateral lobes bluntly acute.         -   Base.—Rounded.         -   Margins.—Entire.         -   Aspect.—Rotate.         -   Texture.—Upper surface; matte, glabrous, velvety, slightly             to moderately carinate, lower surface; very slightly glossy,             glabrous, non-velvety.         -   Color.—When opening upper surface; 3A, basal spot between             N186C and 202A, when opening lower surface; 3A and 4A, basal             spot N200B, when fully open upper surface; 3C, blotched             towards the top 5A to 5B, basal spot 187A, fully open lower             surface; 5A, blotched towards the top 7A. -   Disc florets (male and female):     -   -   Number.—An average of 100.         -   Shape.—Tubular.         -   Base.—Lower 85% fused.         -   Size.—About 8 mm in length and 2 mm in width.         -   Apex.—Acute.         -   Surface.—Glabrous, moderately glossy.         -   Margins.—Entire.         -   Color.—When opening upper and lower surface; 21A, lower half             16C, fully open upper and lower surface; 17A to 17B,             mid-section 16B, base 16D.         -   Receptacle.—Flattened, average of 1.5 mm in height, 4 mm in             diameter, 150C in color.         -   Receptacle spines.—Linear, 100 per disc floret, soft, narrow             acute apex, narrow cuneate base, surface glabrous,             moderately glossy, color; apex 13B, mid-section 150D, base             198C. -   Reproductive organs:     -   -   Gynoecium.—1 Pistil; an average of 7 mm in length, style;             6.5 mm in length, 154C in color, stigma; unequal decurrent,             15A in color, ovary; 156C and 157A in color.         -   Androecium.—5 stamens, filament; 3 mm in length, 166A in             color, anther; linear, 2 mm in length, 14D in color, pollen;             moderate in quantity and 15A in color.         -   Seed.—Seed development has not been observed. 

It is claimed:
 1. A new and distinct cultivar of Coreopsis plant named ‘MVNC1906’ as herein illustrated and described. 